The Luxilon Alu Power 125 is the most used string on the Pro Tour today. Used by various ATP stars such as Roger Federer, Andre Agassi, Gustavo Kuerten, and James Blake. A popular string that is designed for players who are in need of durability, more power, and more feel. The string consist of an impeccable blend of Poly-ether-ether and aluminum fibers, which create a string that gives the consumer a superior combination of power and control.The Luxilon Big Banger Alu Power suits all player styles. Best suited for: Players who are looking for durability, more power and more feel.